Studying Motor Neuron Tests

Completed

• Conditions: Magnetic Resonance Imaging; Volunteer; Central Nervous System; Healthy Subjects; Neurological Disorder

• Registration Number: NCT01517087
• Lead Sponsor: National Institute of Neurological Disorders and Stroke (NINDS)

Brief Summary

Background:

- People with motor neuron disorders have changes in the parts of the brain that control movement. Some tests that are currently used to study these changes are magnetic resonance imaging (MRI) and transcranial magnetic stimulation (TMS). We don t know if MRI scans and TMS give the same results if done at different times in the same person. Researchers want to see if these tests produce different results if given to healthy adults on two separate occasions.

Objectives:

- To test the reliability of different tests of the brain used to study motor neuron disorders.

Eligibility:

* \<TAB\>Healthy individuals at least 35 years of age who have no history of neurological disorders and take no medications.

* \<TAB\>Pregnant women may not participate.

Design:

* Participants will be screened with a medical history and physical exam.

* Participants will have two testing visits 1 to 6 months apart.

* The first visit will have three parts. The first part is a neurological exam to test strength, sensation, reflexes, and coordination of movement. The second part will be TMS tests. The third part will involve an MRI scan to study the parts of the brain that control movement.

* At the second visit, participants will have MRI scanning only.

Detailed Description

Objective

The objective of the protocol is to determine the test-retest reliability of imaging techniques that measure the structural and functional integrity of the motor cortex in healthy subjects. Our goal is to determine whether such measures are sufficiently reproducible that they may be used to follow disease progression over time in patients with motor neuron disease. A second objective is to obtain age-matched normative data to provide reference values for studies examining the correlation of physiological and clinical measurements of motor function, cognitive testing, and plasma and spinal fluid biomarker measures with disease progression in patients with motor neuron disease.

Study Population

55 neurologically normal, healthy adults, age 35 or older

Design

Each subject will undergo several sessions of testing. The first testing session will consist of a clinical examination with measurements of movement speed. Subjects will undergo one session with transcranial magnetic stimulation of the brain, one session of cognitive testing, and three sessions of magnetic resonance imaging of the brain, one to eighteen months apart. Subjects may opt-in for collection of blood and spinal fluid to provide controls for biomarker studies in motor neuron disease patients.

Outcome Measures

The primary outcome is the test-retest reliability of magnetic resonance imaging measurements of the motor cortex in individual subjects.

Study Timeline

• Study First Submitted: 2012-01-24
• Study First Submitted QC: 2012-01-24
• Study First Posted: 2012-01-25
• Study Start: 2012-02-01
• Primary Completion: 2020-11-25
• Study Completion: 2020-11-25
• Status Verified: 2020-12
• Last Update Submitted: 2021-03-11
• Last Update Posted: 2021-03-12

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 47

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Test-retest reliability of MRI measures	09/30/2019	The test-retest reliability will be assessed by calculating the intraclass correlation coefficient (ICC) between the two sessions. An ICC \> 0.8 is considered to indicate excellent reliability.

Trial Locations

Locations (1)

National Institutes of Health Clinical Center, 9000 Rockville Pike; 🇺🇸 Bethesda, Maryland, United States